A system for tracking and detecting flying object rapidly and exactly is designed and the accurate azimuth of the flying object is obtained synchronously. In this system

the azimuth error signal from detecting devices drives a servo running flat with detecting devices and an H-type bipolar PWM project is used in driving subsystem to drive DC motor in the servo running flat to improre response speed. A speed-detected motor is used to get speed feedback signal for better stability. A high precision encoder is adopted to get azimuth signal of flying object for higher measure precision. For analysis on system dynamic transfer function

the dynamic curve is emulated and dynamic parameter is calculated

also switch frequency and delay time are given. Displacement curve and speed curve of step response and other results of the system are obtained by experiment. The results indicate that the system can meet the technique requirements

it shows the excellent parameter in dynamic precision of 0.1°

max tracking velocity of 38.3 (°)/s and max tracking acceleration of 23.5 (°)/s

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